Solution:
Sum to terms of 2, 5, 8,,,… is
and sum to n terms of 57, 59, 61,…., is
According to given condition
If the sum of first terms of the A.P. 2, 5, 8, …, is equal to the sum of first terms of the A.P. 57, 59, 61,…., then equals
Sum to terms of 2, 5, 8,,,… is
and sum to n terms of 57, 59, 61,…., is
According to given condition